mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 05:20:06 +00:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
126 lines
3.5 KiB
ArmAsm
126 lines
3.5 KiB
ArmAsm
/* Save and set current context.
|
|
Copyright (C) 2009-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library. If not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include "ucontext-macros.h"
|
|
|
|
/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */
|
|
|
|
LEAF (__swapcontext)
|
|
mv t0, a1 /* Save ucp into t0. */
|
|
|
|
SAVE_INT_REG (ra, 0, a0)
|
|
SAVE_INT_REG (ra, 1, a0)
|
|
SAVE_INT_REG (sp, 2, a0)
|
|
SAVE_INT_REG (s0, 8, a0)
|
|
SAVE_INT_REG (s1, 9, a0)
|
|
SAVE_INT_REG (x0, 10, a0) /* return 0 by overwriting a0. */
|
|
SAVE_INT_REG (s2, 18, a0)
|
|
SAVE_INT_REG (s3, 19, a0)
|
|
SAVE_INT_REG (s4, 20, a0)
|
|
SAVE_INT_REG (s5, 21, a0)
|
|
SAVE_INT_REG (s6, 22, a0)
|
|
SAVE_INT_REG (s7, 23, a0)
|
|
SAVE_INT_REG (s8, 24, a0)
|
|
SAVE_INT_REG (s9, 25, a0)
|
|
SAVE_INT_REG (s10, 26, a0)
|
|
SAVE_INT_REG (s11, 27, a0)
|
|
|
|
#ifndef __riscv_float_abi_soft
|
|
frsr a1
|
|
|
|
SAVE_FP_REG (fs0, 8, a0)
|
|
SAVE_FP_REG (fs1, 9, a0)
|
|
SAVE_FP_REG (fs2, 18, a0)
|
|
SAVE_FP_REG (fs3, 19, a0)
|
|
SAVE_FP_REG (fs4, 20, a0)
|
|
SAVE_FP_REG (fs5, 21, a0)
|
|
SAVE_FP_REG (fs6, 22, a0)
|
|
SAVE_FP_REG (fs7, 23, a0)
|
|
SAVE_FP_REG (fs8, 24, a0)
|
|
SAVE_FP_REG (fs9, 25, a0)
|
|
SAVE_FP_REG (fs10, 26, a0)
|
|
SAVE_FP_REG (fs11, 27, a0)
|
|
|
|
sw a1, MCONTEXT_FSR(a0)
|
|
#endif /* __riscv_float_abi_soft */
|
|
|
|
/* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask, _NSIG8) */
|
|
li a3, _NSIG8
|
|
add a2, a0, UCONTEXT_SIGMASK
|
|
add a1, t0, UCONTEXT_SIGMASK
|
|
li a0, SIG_SETMASK
|
|
|
|
li a7, SYS_ify (rt_sigprocmask)
|
|
scall
|
|
|
|
bltz a0, 99f
|
|
|
|
#ifndef __riscv_float_abi_soft
|
|
lw t1, MCONTEXT_FSR(t0)
|
|
|
|
RESTORE_FP_REG (fs0, 8, t0)
|
|
RESTORE_FP_REG (fs1, 9, t0)
|
|
RESTORE_FP_REG (fs2, 18, t0)
|
|
RESTORE_FP_REG (fs3, 19, t0)
|
|
RESTORE_FP_REG (fs4, 20, t0)
|
|
RESTORE_FP_REG (fs5, 21, t0)
|
|
RESTORE_FP_REG (fs6, 22, t0)
|
|
RESTORE_FP_REG (fs7, 23, t0)
|
|
RESTORE_FP_REG (fs8, 24, t0)
|
|
RESTORE_FP_REG (fs9, 25, t0)
|
|
RESTORE_FP_REG (fs10, 26, t0)
|
|
RESTORE_FP_REG (fs11, 27, t0)
|
|
|
|
fssr t1
|
|
#endif /* __riscv_float_abi_soft */
|
|
|
|
/* Note the contents of argument registers will be random
|
|
unless makecontext() has been called. */
|
|
RESTORE_INT_REG (t1, 0, t0)
|
|
RESTORE_INT_REG (ra, 1, t0)
|
|
RESTORE_INT_REG (sp, 2, t0)
|
|
RESTORE_INT_REG (s0, 8, t0)
|
|
RESTORE_INT_REG (s1, 9, t0)
|
|
RESTORE_INT_REG (a0, 10, t0)
|
|
RESTORE_INT_REG (a1, 11, t0)
|
|
RESTORE_INT_REG (a2, 12, t0)
|
|
RESTORE_INT_REG (a3, 13, t0)
|
|
RESTORE_INT_REG (a4, 14, t0)
|
|
RESTORE_INT_REG (a5, 15, t0)
|
|
RESTORE_INT_REG (a6, 16, t0)
|
|
RESTORE_INT_REG (a7, 17, t0)
|
|
RESTORE_INT_REG (s2, 18, t0)
|
|
RESTORE_INT_REG (s3, 19, t0)
|
|
RESTORE_INT_REG (s4, 20, t0)
|
|
RESTORE_INT_REG (s5, 21, t0)
|
|
RESTORE_INT_REG (s6, 22, t0)
|
|
RESTORE_INT_REG (s7, 23, t0)
|
|
RESTORE_INT_REG (s8, 24, t0)
|
|
RESTORE_INT_REG (s9, 25, t0)
|
|
RESTORE_INT_REG (s10, 26, t0)
|
|
RESTORE_INT_REG (s11, 27, t0)
|
|
|
|
jr t1
|
|
|
|
|
|
99: j __syscall_error
|
|
|
|
PSEUDO_END (__swapcontext)
|
|
|
|
weak_alias (__swapcontext, swapcontext)
|